Un énorme merci pour les RAW ce que font rarement les astrophotographes sur youtube, pour ceux comme moi qui n'ont pas encore de caméra mono ça permet au moins de s'entraîner et appréhender le traitement ! Continue !

@CuivTheLazyGeek

3 жыл бұрын

Merci pour ton retour! Bon courage avec le traitement & clear skies!

The more I look at this kind of technique, the more I'm convinced that I'll stick with a color camera for now :) I'm like you, I don't like to be artsy fartsy, that's better left to other folks. Thanks for the demo

@CuivTheLazyGeek

4 жыл бұрын

Hahaha I totally understand! Still, monochrome + LRGB is actually quite easy to process - you do the combination, then deal with it like the output from a color camera, nothing complicated or artsy with curves and stuff. But color camera is indeed quite convenient!

@nathanhassey4724

3 жыл бұрын

This comment is gold!

Awesome as always Cuiv. You are such a smart person. I’ve made a process icon with the parameters in there and saved. I just have to make sure my Ha, SII and OIII files are named the same as what I have in the parameters. Thanks again.

@CuivTheLazyGeek

4 жыл бұрын

Thanks for the feedback Pete! Glad it's useful, I really like this method!

Now I know why you like one-shot color. Very nice what you did for the final image, really like the stars. BRAVO. (I like green as well)

@CuivTheLazyGeek

4 жыл бұрын

Thank you John! Yeah, OSC is like the dark side of the Force, easier, more seductive.... But monochrome + LRGBSHO is still better :) In the end, mono+LRGB is fairly easy to process since color calibration is easy then. It's really narrowband that always puzzles me!

Thanks for the tutorial Cuiv!! Tried this technique out on some old NB data on the Bubble nebula with spectacular results!!! Keep up the good work!

That tutorial was a bit mind-bending. I'm trying to wrap my head around how I might turn my "vision" for the image into a pixelmath expression for each channel. Definitely something to think about.

@CuivTheLazyGeek

4 жыл бұрын

I'm feeling the same - you saw how I ended up using the formula on the screen " as is". But I need to wrap my head around the logic as well!

Saved to review it deeply later. Thanks

Good tutorial! Creating art vs capturing "reality"...this is how I feel digital astrophotography. When I was doing film photography back in the mid 80's, looking through all the old books like Robert J. Traister & Susan E. Harris' "Astronomy & Telescope", or Michael Covington's "Astrophotography for the Amateur", there was only one way to look at Orion Nebula, or Ring Nebula.Then in 2014, I restarted Astrophotography, but now digital - there's a multitude of ways to represent Orion and Ring Nebula to the point I couldn't recognise it anymore! I have. to relearn this hobby!!

@CuivTheLazyGeek

4 жыл бұрын

Thank you! And yes, exactly!! The crazy thing with narrowband (and digital) is that due to the freedom afforded by the digital world, there are infinite ways to represent any object (and especially nebulae in narrowband), which really makes it hard for people like me! Ganbarimashou!

I didn't know you were into Paragliding. I fly - a flexwing microlight - love being in the air! A few of my pilot friends are also into astronomy. Keep up the great work on all the astro videos :-)

@CuivTheLazyGeek

4 жыл бұрын

Wow, that is so cool! Powered flying is something I want to try (and I'm a bit of a flight simulator geek too - I may have been testing an alpha version of an upcoming flight sim whose name I cannot mention for the past several months :) ). What I love about paragliding is that the whole thing fits in a backpack! You can literally hike up a mountain, and then fly down! I'll definitely keep going on the astro videos!

@Thunder_Dome45

4 жыл бұрын

@@CuivTheLazyGeek Tell those Flight Simulator people, who ever they are wink wink, we are patiently waiting out here for the release. Get after it. Surely it's stable.

@CuivTheLazyGeek

4 жыл бұрын

@@Thunder_Dome45 It's been shockingly stable and feature-rich for months already. It is well worth the wait!

Very nice, Cuiv. Using the Curves Transformation for selective color had me drinking way too much beer lol. I've used Selective Color in Photoshop and have developed a workflow for how I finalize my colors for SHO. Now though, I use the HSL (selective color) in APP with the same workflow.

@CuivTheLazyGeek

4 жыл бұрын

Selective color (in PI you do that with ColorMasks) works well.... but I hate it, because then you can get very abrupt transitions between colors, and have dots of one color within a region of another color. Of course, feathering helps, but I have had trouble with that method too...

thanks Cuiv, you are a genius

Very informational Cuiv, I have been using Histogram transformation to make things non linear but that masked stretch seems cool. I will try that on my next image. As always, thanks.

@CuivTheLazyGeek

4 жыл бұрын

Thank you Kurt! Yeah, I've found Masked Stretch protects stars much better than standard Histogram transformation, including (or especially) for standard LRGB images - so masked stretch followed by curves is my GoTo stretching methods... We should do a video together sometime (no idea what it could be, just that something like that could be fun)

@AstroQuest1

4 жыл бұрын

@@CuivTheLazyGeek Can't wait to try it out. Yeah, that would be cool doing a video on something...

Ah neat. I've done a lot of narrow band and never once tried an Ha luminance. I'll definitely try that now. I just combined the SHO colors and started working on it.

@CuivTheLazyGeek

4 жыл бұрын

HA as luminance makes a HUGE difference! Looking forward to your comments regarding this method!

@Thunder_Dome45

4 жыл бұрын

@@CuivTheLazyGeek I tried that method of using Ha as luminance on the Crescent nebula and it makes the Ha part come out good, but then the little areas of OIII that bubbles out of the nebula seem to almost disappear. Do you think you can combine the Ha and OIII as a single luminance channel? I may also try to use the OIII integrated image to make a mask and stretch the OIII parts back to life, but I'll have to try it. I'm doing a HOO image of narrowband for the Crescent.

Merci pour ce tuto :) Je reprends mes anciens traitements en SHO, je vais en profiter pour appliquer cette nouvelle méthode qui me semble top ! En combinant avec starnet++ il y a moyen de tirer le moindre signal du bruit sans affecter les étoiles. Je pense que ça + ton tuto rendront les choses beaucoup plus simple à l'avenir :) Encore merci !

@CuivTheLazyGeek

4 жыл бұрын

C'est en effet une technique surprenante, mais qui peut rellement donner de bons resultats! Il est important de suivre PixelMath d'un LRGB combination (pour le L), mais apres ca peut vraiment donner de jolis couleurs! J'avoue que proteger les etoiles, c'est encore quelque chose que je ne fais pas beaucoup (ou pas du tout)... Il va falloir que je m'y mette!

@jonathandurand5534

4 жыл бұрын

@@CuivTheLazyGeek un premier test ici : www.astrobin.com/full/aq0w4u/C/ . Super méthode, merci de l'avoir partagée

@CuivTheLazyGeek

4 жыл бұрын

@@jonathandurand5534 Wow, genial!! Quelle image magnifique, bien joue!

Hi, Cuiv are you French or do you speak French? three expressions in French this evening and since the beginning that I follow your chain you have an English really very pleasant for a French-speaking Belgian. all your videos are for me as a great training very well explained and just with enough humor and laziness, sorry for my poor english which is not your level thank you very much for all this great work

@CuivTheLazyGeek

4 жыл бұрын

Merci Jean-Pierre! You are absolutely right, I am French :) I'm glad my English is easy to understand for French speakers, I think it comes with the accent! Thanks for the feedback and clear skies!

Première fois que je t'entends parler français, je ne savais pas que tu étais francophone :-) Je viens seulement de recevoir mes filtres donc aucune expérience pour le moment mais si ça te dit, j'ai trouvé des tutos qui ont l'air plutôt intéressants concernant la SHO sur les chaînes de Valentin Cohas (UCGbzEIotbXF6AHAorar8pbQ) et astro pixaaa (UCsLAtEi0g_dtRT9pAs3o2nw). Au plaisir de voir tes prochaines vidéos !

@CuivTheLazyGeek

4 жыл бұрын

Merci pour ça, je vais regarder! La technique combinatoire de ForaXx est géniale cependant, et depuis je ne fais quasiment plus de Hubble Palette (ça me fait mal de trucider le vert du HA...). Bon courage avec ton aventure Narrowband!

Hello. Most funy and best explained tutorials. For colour cameras and sho pallete, the workflow should be the same right as for mochrome cameras ? :). Thank you.

Yes ..... I have found recently that pixelmath is so much faster than layer manipulation where you could have a lot of layers in PS before you achieve a similar result. There is not enough tutorials on UTube on pixel math ....most people would like a basic set of prefabricated expressions that they could use to achieve the basics particularly image combining expression.....would you be able to assemble a working set of pixelmath expressions for us and present them in one of your videos. That would be terrific....thank you...just love your technical explanations....good to know a bit of why we are doing things in Pixinsight.

@CuivTheLazyGeek

4 жыл бұрын

That's a great idea! I think I should create a website with textual articles in addition to the KZread videos. I'll have to think about it, thanks for the idea!

Interesting. I'll be giving that a try. Why not use Linear Fit to equalise the histograms of the individual channels prior to Pixel math combination? Seems a quicker more precise way to achieve the same result.

@CuivTheLazyGeek

4 жыл бұрын

I followed the preference of the method's author - and it is easier to do the Masked Stretch three times, followed by LRGB combination to add Luminance (LRGB combination requires non-linear images). I always had more trouble when combining using linear images so I stretch prior to combination... In the end I think it's not the end of the world either way, but I'll try some more with linear images!

@nicholasmichael9452

4 жыл бұрын

@@CuivTheLazyGeek Linear fit is a misnomer. It works on linear and non-linear images as long as they are aligned to each other. So I would suggest doing exactly what you have been doing i.e. still ding masked stretch, but just replacing the curves stretch to equalise the histograms with Linear Fit. It is a few less mouse clicks and will be a more precise equalisation. :-) PI does seem to have some processes that could be better named. Multiscale Linear Transform being another one :-)

I just found your channel, Great post!

@CuivTheLazyGeek

4 жыл бұрын

Thank you Walter, and welcome to the channel! Tons of other content on here already if you are interested :)

Merci pour le partage Cuiv ! super technique... (mais tu est français ??)

@CuivTheLazyGeek

Жыл бұрын

Merci! Et oui, je suis français!

Once you find the palette you like you can put the new instance tab onto your workbench and save that separately. You have a copy that you can apply to all your NB images, so they all have your palette. You'll never have to play around with the hue curve tool again! How's that for laziness?

@CuivTheLazyGeek

3 жыл бұрын

Good idea! I need to get to that!

Hi Cuiv, Just playing with this data now in PI - trying to do a PCC, but the FITs header lacks scope focal length and camera details...kind of need both to do an ImageSolve first before PCC. Can you advise on camera and scope focal length please?

Got me laughing again, the messing around you hate is what I love to do. That's why I don't do tutorials....everything would be "...then mess with the sliders and previews until it looks right" :) Took my ASI533MC-Pro out mon night, but wind came up again. Sigh.

@CuivTheLazyGeek

4 жыл бұрын

Hahaha, I think we should team up then! I capture the data, and you do the processing for me - processing narrowband is something I really don't enjoy doing, as I'm always second-guessing myself... Too bad about the wind... These days I stopped caring, and I image anyway - at least my 200mm lens would not be so horribly affected. We are a bunch of masochists in this hobby though!

Your Welcome.. keep us posted.. im sending you dozens of SHO HOO pre-programed Icons..

@CuivTheLazyGeek

4 жыл бұрын

Awesome! I'll check them out as soon as I have some time!

I am too lazy to do narrowband. I only do Globular and open clusters. I find everything else boring. Beautuful final image though :)

@CuivTheLazyGeek

4 жыл бұрын

That's one way to go about things :D Thank you!

Don't know why but that colour palette made me think of Captain Marvel. Did you know that some people complain that you speak too fast. Not to me. I need to learn more about PixInsight.

@CuivTheLazyGeek

4 жыл бұрын

Hehehe I think I see what you mean! As for my speaking speed... I actually try to keep it fairly slow. And when I watch my own videos to check what the heck I said in the past, I'm always watching at 2x speed. I don't think I'll be able to adjust the speed of my speech, but many I can try to enunciate better... At worst, people can watch at 0.75x on KZread! Good luck with PixInsight!

nice video ! are you french . i feel a small accent ....

@CuivTheLazyGeek

4 жыл бұрын

Yep, I am indeed French :) Well spotted! And thanks for the feedback!

Try the SHO script for narrow band processing in Pixinsight: pixinsight.com/forum/index.php?threads/sho-aip-update-version-1-2-6-27th-may.14043/

@CuivTheLazyGeek

4 жыл бұрын

Thank you Christoph! This looks like a very useful script - I had a quick try, and it seems to perform something similar to an LRGB combination for SHO with some convenient features on top. It's great, but I end up with the same issues I have with the color processing post-combination... I'll test it out some more, thank you!

You can upload jpg of the three separate grayscale masters to the Bintel Narrowband preview tool and it will show you some combination, it's actually designed by another KZread astrophotographer, Dylan O'Donnell, here the link www.bintel.com.au/narrowband-preview-tool/?v=322b26af01d5

@CuivTheLazyGeek

4 жыл бұрын

Cool, very interesting! Thanks for the tip, I'll have a look next time I do narrowband processing :)

@GioFar

4 жыл бұрын

@@CuivTheLazyGeek No problem, you're welcome